发明授权
- 专利标题: Device and method for detecting shadow in image
- 专利标题(中): 用于检测图像阴影的设备和方法
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申请号: US12656586申请日: 2010-02-04
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公开(公告)号: US08295606B2公开(公告)日: 2012-10-23
- 发明人: Tao Li , Xun Yuan , Gang Wang , Zhongchao Shi
- 申请人: Tao Li , Xun Yuan , Gang Wang , Zhongchao Shi
- 申请人地址: JP Tokyo
- 专利权人: Ricoh Company, Ltd.
- 当前专利权人: Ricoh Company, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Harness, Dickey & Pierce, P.L.C.
- 优先权: CN200910126541 20090312
- 主分类号: G06K9/62
- IPC分类号: G06K9/62
摘要:
A device for detecting a shadow region in an image includes an imaging module generating a multi-channel image including brightness, red, green, and blue channels, a brightness correcting module correcting values of the brightness channel based on imaging parameters and outputting a corrected multi-channel image, a scene classifying module determining to carry out a shadow detection on the corrected multi-channel image, a shadow detecting module classifying pixels of the corrected multi-channel image into a shadow or non-shadow pixel, and generating a shadow classification mark matrix having pixels having a shadow classification mark value corresponding to the classification, a region segmentation module segmenting the multi-channel image into regions having pixels having similar color values, and generating a region mark matrix having pixels having a region mark value, and a post-processing module updating the shadow classification mark matrix based on the shadow classification mark matrix and region mark matrix.
公开/授权文献
- US20100232705A1 Device and method for detecting shadow in image 公开/授权日:2010-09-16